Mired in controversies, the Prime Minister's Office (PMO) in India has declined to disclose information related to 2G spectrum allocation issue citing breach of parliamentary privilege.

Replying to an RTI query by advocate Vivek Garg, the PMO said since the issues relating to the allocation of second generation spectrum is being looked into by Parliamentary Committees, the information cannot be made public.

The surfacing of a 2G note of the finance ministry on the basis of an RTI query filed by Garg had caused crises in the government in September. The finance ministry note written on March 25, 2011 had said that the then finance minister of India P Chidambaram could have avoided the scam had he insisted on auctioning of spectrum.

"Papers and records on the issue have been requisitioned by these committees. Under Section 8 (1) (C) of the Right to Information Act, such information, the disclosure in terms of Rule 275 of the Rules of Procedure and Conduct of Business in Lok Sabha (lower House of Indian Parliament) evidence given before a parliamentary committee shall not be published until it has been laid on the Table in Indian Parliament.

"Therefore, papers constituting evidence given to a Parliamentary Committee whose report is yet to be tabled are exempt from the disclosure," the Central Public Information Officer of the PMO said in reply to an RTI application filed by Garg.

Section 8 (1) (c) bars "information, the disclosure of which would cause a breach of privilege of parliament or the state legislature".

Exercising his Right to information, Garg had sought details of communications relating to 2G spectrum sale between the PMO and other concerned ministries.

"It is a setback to transparency law. The PMO has wrongfully denied information. I have filed an appeal over the denial," Garg said.

Both the public accounts committee and joint parliamentary committee are looking into several allegations of corruption and irregularities in the allocation of second generation spectrum to certain telecom companies in 2008.